7 Feb
2011
7 Feb
'11
8:57 p.m.
as power supply(-ies) operating off the AC line. But
a switching
supply shouldn't care if it's running from DC or AC.
It won't bother the powers-that-be, but to make this marginally on-topic
for classiccmp, a fair number of older SMPSUs do require AC mains inputs.
They have a mains frequency transfomer to provide the startup supply (and
sometimes the running supply for the SMPSU control circuitry). The VT100
is one such, so is the HP7245 pritner/plotter.
of course if we ever do get DC maoins, classiccmpers are going to have
problem. There are a lot of linear PSUs in our machines, AC motors in
disk drives, fans, etc and so on. I suspect we'll have to make DC->AC
converters...
-tony